Boiler soot-blower



F. L. DORNBRUOK. BOILER SQOT BLOWER. APPLICATION FYILED 'MAY 15, 1914.

2 SHEETSSHEET I.

Patented Apr. 20, 1920.

OCOO

F. L. DORNBROOK.

BOILER 800T BLOWER.

APPLICATION FILED MAY 15. 1914.

Patented Apr. 20, 1920.

2 SHEETSSHEET 2- UNITED STATES PATENT OFFICE.

FRED L. DORNBROOK, OF MILWAUKEE, WISCONSIN, ASSIGNOB, BY MESNE ASSIGN-MENTS, TO THE VULCAN SOOT CLEANER COMPANY, A CORPORATION OF DELA- WARE.

BOILER SCOT-BLOWER.

Application filed May 15,

T 0 all whom it may concern Be it known that I, FRnn L. DORNBROOK, ofMilwaukee, Visconsin, have invented Boiler Soot-Blowers, of which thefollowing is a specification.

This invention relates to devices for removing the soot or depositedcarbon from the tubes of water-tube boilers. The object which I have inview is to provide a device which can be installed in a boiler of anywidth at moderate expense and by a simple manipulation will effectivelyclean the tubes or remove the soot therefrom mechanically in a thoroughmanner. Heretofore devices for such purpose have been devised consistingof steam-pipes mounted transversely or parallel to the tubes and havinglateral nozzles through which steam jets were delivered. These devices,however, at least such of them as are known to me, have all proveddefective and unsatisfactory in use in case of boilers provided with aheavy bank of tubes either very wide or very deep, for the reason thatthe jets from the nozzles do not effectively reach the surfaces of thetubes in such manner as to remove the soot therefrom. It is obvious thatsuch jets acting in an individual capacity will drive merely in straightlines between the tubes, consequently cannot reach the surfaces of thetubes which lie behind other tubes, and it is these surfaces whichlargely carry the soot.

It is the main object of this invention to construct such a blower upona new principle: to wit, by so directing the several jets that they willcooperate one with another, acting in such a manner as to produceatmospheric eddies or whirls in the intertube-spaces, which thereforeproduce cross currents, that is to say, currents lying transversely tothe jets themselves, so as to reach every part of the surface of thetubes in a forcible manner and drive off the soot which is depositedthereon. I aim furthermore so to construct the device that it willcompletely-remove all the soot, not merely from the tubes, but from theboiler and flue surfaces, and thereby act as a cleaner for same;

and I have proved by long continued use that it will do so.

My invention embodies not merely this new principle but also other novelconstruc- Specification of Letters Patent.

Patented Apr. 20, 1920.

Serial No. 838,712.

tions which are auxiliary thereto, as will appear from the followingdetailed description and are embodied in my claims.

For the better understanding of my invention I have described in thefollowing specification some of the most improved forms thereof,illustrating the same in the accompanying drawings, wherein Figure l isa transverse section on the plane 1 of awater-tube boiler having anumber of my improved soot-blowers mounted in position therein, samebeing taken on the section-plane l of Fig. 2;

Fig. 2 is a longitudinal section thereof on the plane 2;

Fig. 3 is a partial section on the plane 1 on a larger scale, showingthe upper part of the bank of water-tubes and a part of one of thesoot-blowers;

Fig. 4 is a transverse section of one of the sootblowers on the plane 4and on a still larger scale;

Fig. 5 is a fragmentary longitudinal section through a portion of thesoot-blower pipe and one of the lateral nozzles;

Fig. 6 is a fragmentary side-view of another form of soot-blower,showing a somewhat difierent disposition of the nozzles to effect thesame results; and

Fig. 7 is a longitudinal section through the rotary joint at the end ofthe sootblower pipe.

In these drawings the several reference letters designate the samerespective parts in each figure.

For the sake of illustration I have shown in Figs. 1 and 2 a common typeof watertube boiler and setting, the same comprising the boiler-drums A,bank of water-tubes B, headers C and D at front and rear completing thecirculation through the watertubes and drums, and a superheating devicecomprising another bank of tubes E with headers F mounted above theboiler-drums A which receive the generated steam from the gas-space insaid drums and deliver it thence to the steam-mains for consumption. Theboiler-setting comprises the side-walls G; the top-closure or roof H;the frontclosure comprising the insulated wall 1, doors i and rollingcurtain-doori the rearclosure comprising insulated wall J, doors j andj', and back-wall which is provided 7 60 through which tubes 13 to thecombustion-ohamber 13 which is under the drums A, thence downwardlybetween the baffle-plates R and S into the 15 soot-chamber 14, thenceupwardly again behind the baiiie-plate S to the flue 15 which is behindthe wall P, thence to the overhead chamber 16 or part of the flue whichlies horizontally along the top of the drums and 20 betweenthesuperheater-tubes E, and finally out to the-chimney or stack through theflueopening 7L1 in the roof H, which is governed by the damper 7L Theabove description, it is to be understood, relates onlyto known featuresand not to those of my invention. Eight of the,

. latter are shown as installed, six of which are designated as a whole'1, and the other two,

which are on the under sides of the bank of tubes'B, are designated T asthey present a slight difierence in their construction.

Each of the soot-blowers comprises a pipe t which is mounted either uponor under one ofthe banks of tubes and transversely thereto, so that itwill be readily seen the blower is adaptable to batteries of boilers ortubes of any width whatever; Said pipe 25 is mounted preferably in theapertures of clips U, each clip comprising a pair of 40 plates united bya bolt-u and having at one end a pair of semi-cylindrical sockets 1&adapted to engage and be clamped by the bolt u 'upon one of the tubes B,and perforated at the other end with a hole' which forms abearing forthe pipe "5 which passes through it. The pipe t carries a plurality ofbifurcated nozzles t the peculiarity of whichis that'the two branchesthereof are directed substantially along the oblique lines oftheintertube-spaces as shown in opposite directions, so that the jets ofthe different nozzles cross each other on their way through saidinter-tube spaces; and further, that the jets do not lie in the sameplane but in planes somewhat separated from each other, in such mannerthat in crossing each other whirls or eddies are set up, which beingtransverse to the directions of the jets effectively reach the jetsthemselves do not pass. V 7 Two ways of effecting this condition areshown in the drawings; but I do not pretend that they arethe only waysin which it may with the supply of steam.

ber.

those inter-tube spaces Such means as illustrated comprise the hollowj0int-box or steam-box V, in which rotates the cyllndrical member 1V,having on one end: a socket head 10 into which the end ofithe pipe 25screws, and on the other end a square Q02, adapted to receive a, crankX' provided with a handle 00 for turning it. The boX V has packingglands r on its'ends and a .centralsteam-chamber o with a Vscrew-threaded side-outlet a to receive. the s5 steam-supply pipe Y. Themember IV has a bore 20 fora part of its length which opens laterally atw intothe chamber 42 whereby the member IV, and with the pipe t can becontinuously rotated by means of the crank X without'interfering Forproviding against endwise movement a groove 10 is formed in the memberW, which is engaged by the bossedends w of the screws w". "Any'othermeans for accomplishing the same result of rotating or oscillating thepipe '29 while supplying steam thereto may be adopted. At its-inner endsaid pipe is closed by a'cap t l The soot-blowers T which are below thebank B are arranged differently from the blowers T in that thearrangementofthe nozzles it does not follow a continuous helical linearound thepipeit? but said nozzlesare disposed" all on one side of thepipe, shifting their angles in a zig-zag manner, an'd'means are provided(such as for example a stop-pin inthe groove w?) for limiting the.anglethrough which pipe 25 can be turned, so that at no timecan it beturned so faras to cause the jets to blow down. into the'soot-reeeivingchamber 14, because it is not desired to disturb orstir up the sootwhich isdeposited in said cham- In the same manner various changes andmodifications in the constructions as herein shownmay be adopted withoutdeparting from the spirit of my invention and I wish it understoodtherefore that the latter is not otherwise limited than .by the properscope of my claims.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is 1. In a flue cleaner system, a fluiddistributing. pipe having openings therein-.with

v the adjacent openings in different radial 65 be accomplishedso'thatthe same principle planes, and a nozzle for each opening havingan axial opening terminating at the outer end in a V-shaped passage toproject spaced jets from each nozzle with the adjacent jets of opposednozzles traveling in proximity to set up a vortex of whirling motionthere between.

2. In a flue cleaner system, a fluid distributing pipe having openingstherein with the adjacent openings in adjacent radial planes, and anozzle for each opening having a Y-shaped passage to project spaced jetsfrom each nozzle, with the adjacent jets of opposed nozzles traveling inproximity and free of contact to set up a vortex of whirling motiontherebetween.

3. In a flue cleaner system, a fluid distributing pipe provided withoutlets spaced apart along the pipe having their axes inclined towardeach other and located in parallel planes so spaced that the nozzleswill project spaced crossing jets in suflicient proximity to create awhirling action in the gases between the jets.

&. In a flue cleaner system, a fluid distributing pipe provided withjets of outlets spaced apart along the pipe, adjacent outlets of eachset having their axes inclined toward each other and lying in parallelplanes which are inclined to the axis of the pipe and s0 spaced as toproduce crossing jets which create a whirling action of the interveninggases.

5. In a flue cleaner system, a fluid distributing pipe having openingstherein spaced apart along the pipe, and av nozzle for each openinghaving diverging outlets with the axes of adjacent outlets of adjacentnozzles inclined toward each other and located in parallel planes sospaced that the nozzles will project crossing jets in suflicientproximity to create a whirling action in the gases between the jets.

6. In a flue cleaner system, a fluid distributing pipe having openingstherein spaced apart along the pipe and a nozzle for each opening havinga Y-shaped passage defining spaced outlets with the adjacent outlets ofadjacent nozzles having their axes inclined toward each other and lyingin parallel planes which are inclined to the axis of the pipe and sospaced as to produce crOSSing jets which create a whirling action of theintervening gases.

In witness whereof I have signed my name in the presence of twowitnesses.

FRED L. DORNBROOK.

itnesses HERBERT FURIOK, F. H. SwEFLow.

